Codecademy export

population_queries.sqlite

-- This is the first query:

SELECT DISTINCT year AS 'year range' from population_years;

-- Add your additional queries below:

--4.What is the largest population size for Gabon in this dataset?
SELECT year, country, MAX(population) FROM population_years
WHERE country = 'Gabon';
--Answer: 1.55 million in 2010

--5.What were the 10 lowest population countries in 2005?
SELECT country, population AS 'smallest 10 populations in 2005'
FROM population_years
WHERE year = 2005
ORDER BY 2 ASC
LIMIT 10;
--

--6.What are all the distinct countries with a population of over 100 million in the year 2010? 
SELECT DISTINCT country, ROUND(population, 2) AS 'population over 100 million in 2010'
FROM population_years
WHERE year = 2010
AND population > 100
ORDER BY 2 DESC;
--

--7.How many countries in this dataset have the word “Islands” in their name? 
SELECT DISTINCT country AS 'countries with "islands" in name' FROM population_years
WHERE country LIKE '%Islands%';

SELECT COUNT(DISTINCT country) AS 'number of countries with "islands" in name' FROM population_years
WHERE country LIKE '%Islands%';
--Answer: 9

--8.What is the difference in population between 2000 and 2010 in Indonesia? Note: it’s okay to figure out the difference by hand after pulling the correct data
SELECT * FROM population_years
WHERE year = 2010
AND country = 'Indonesia';

SELECT * FROM population_years
WHERE year = 2000
AND country = 'Indonesia';
--Answer: 28.29 million